Aluminum Alloy Pin-type
Truss: Installation Steps and Common Faults
I. Installation Steps
Aluminum alloy pin-type trusses feature convenient pin-type connections,
modular truss for stage making the installation process relatively simple. The specific steps are as follows:
Preliminary Preparation and Site Inspection
Confirm that the installation site is flat, solid, and free of obstacles (such as raised ground, wires, etc.). Plan
modular truss with brackets the truss installation position and dimensions according to the design drawings.
Check truss components: Verify that main trusses, cross braces, diagonal braces, pins, connecting plates, etc., are complete and free of deformation, cracks, or damage. Ensure all components match (e.g., pin size fits truss pin holes).
Basic Splicing (Single Section Truss Assembly)
Lay single-section trusses flat on the ground, align the connecting ends of adjacent trusses, and ensure the pin holes at the interfaces are fully aligned.
Insert pins: Insert special pins into the side pin holes of the trusses,
Round Tube Truss System ensuring the pins pass through the pin holes of both interfaces and are fully locked (some models require spring pins or bolts for auxiliary fixation to prevent falling off).
Install reinforcing accessories: Depending on span requirements, add cross braces or diagonal braces at the splicing points, fixing them with bolts or pins to enhance overall stability (large-span trusses require an additional set of reinforcing components every 3-5 meters).
Overall Hoisting and Positioning (For High-Altitude Installation)
If the installation height exceeds 1.5 meters, use
Scaffolding,
Steel Round Tube Truss lifting platforms, or cranes for assistance (small trusses can be manually lifted). Before hoisting, check that all connection points are firm and pins are fully in place.
Slowly hoist to the predetermined height, then fix the position by adjusting support feet or cables. Ensure the truss is horizontal or vertical (use a level for calibration) to avoid tilting.
Auxiliary Fixation and Safety Inspection
For outdoor installation or large-span trusses, reinforce with steel wires, ground anchors, or counterweights to enhance wind resistance (it is recommended to suspend installation when wind speed exceeds level 5).
Comprehensive inspection: Confirm that all pins are not loose, Alloy Pin-Type Truss System cross braces/diagonal braces are properly installed, the overall truss has no shaking, and load-bearing parts (such as positions for hanging lights or curtains) are firm. If necessary, conduct a load test (place heavy objects and observe for 10-15 minutes).
II. Common Faults and Solutions
Aluminum alloy pin-type trusses may experience faults due to improper installation or component wear during use. Common issues and countermeasures are as follows:
Loose Connections or Pin Dislodgement
Phenomenon: Shaking at truss interfaces, pins falling off or partially dislodging, which may cause overall structural deviation.
Causes: Pins not fully inserted into pin holes, worn or deformed pins, debris (such as dust, rust) at interfaces blocking tightness.
Solutions:
Disassemble the interface, clean debris in pin holes, and Alloy Pin-Type Truss replace worn pins;
Reinsert pins, ensuring they penetrate both interfaces and lock tightly (gently tap the top of the pin to fully seat it);
For long-term used trusses, regularly apply rust inhibitor to reduce pin hole corrosion.
Truss Bending or Deformation
Phenomenon: Stage Platform with Truss Single-section trusses show arc bending, which worsens under load, affecting overall stability.
Causes: Load exceeding the rated capacity (e.g., hanging overly heavy lamps, curtains); compression or collision during transportation or storage; material fatigue (long-term high-frequency use without replacement).
Solutions:
Immediately stop use and replace deformed components (do not force correction to avoid breakage);
Check the rated load of the truss (usually marked in product instructions) to avoid overloading;
Avoid excessive stacking during transportation, and store horizontally or with bracket support to prevent compression deformation.
Overall Tilting After Installation
Phenomenon: The truss structure tilts to one side, with verticality deviation exceeding 5°, posing a risk of collapse.
Causes: Uneven ground not leveled; Square Tube Truss System inconsistent support foot heights; excessive force on one side (e.g., hanging heavy objects on one side).
Solutions:
Adjust support foot heights (some trusses have adjustable screws at the bottom) and calibrate verticality with a level;
Distribute loads evenly to avoid one-sided overloading;
If the ground is soft, place steel plates or wooden boards to increase the stress area and prevent settlement and tilting.
Component Rust or Sticking
Phenomenon: Pins and pin holes stick due to rust, making disassembly difficult; rust spots appear on metal component surfaces.
Causes: Long-term exposure to humid, dusty environments without timely maintenance; wear of material protective layers (e.g., anodized layers).
Solutions:
Spray rust remover on rusted parts, disassemble after loosening, clean, and apply lubricating grease (e.g., petroleum jelly);
Regularly clean the truss surface, dry moisture promptly after outdoor use, and touch up with anti-rust paint if necessary.
Lost or Damaged Accessories
Phenomenon: Small parts such as pins, connecting plates, and bolts are lost or broken due to repeated disassembly.
Causes: Accessories not stored promptly after installation; insufficient strength of accessory materials (e.g., low-quality pins).
Solutions:
Equip a special toolbox to centrally store small parts after installation, marking models for replacement;
Replace with high-strength accessories (e.g., stainless steel pins) and avoid using mismatched substitutes.
Wuxi Zhongshengwei Metal Products Co., Ltd.
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